TRANSFER OF LOEW’S COLLECTION TO CAMBRIDGE 
77 
A biographical notice of Hagen by Mr. Samuel Henshaw ap¬ 
peared in the Proceedings of the American Academy of Arts and 
Sciences, Vol. XXIX. His domestic life is described in this 
short sentence: “ Of Dr. Hagen’s domestic life it is sufficient to 
record here that in 1851 he married Johanna Maria Elise Ger- 
hards, who survives him.” As a friend and sincere admirer of 
Mrs. Hagen I feel bound to complete this insufficient notice of her. 
About Dr. Hagen’s death Mr. Henshaw’s biographical notice says: 
“ Stricken with paralysis in September, 1890, Dr. Hagen lingered 
for more than three years; his painful sufferings being lightened 
by all that affectionate and devoted care could do.” A letter from 
a friend of mine, who lives in Cambridge, and who announced to 
me, at that time, the death of Hagen, contains the following pas¬ 
sage : “ His wife’s devotion, strength, and cheerfulness have been 
simply magnificent. For more than three years she never once 
spent six hours, winter or summer, away from the house. She had 
to lift him, move him in his bed, dress him, and never once flagged 
or faltered. She seems surprisingly fresh and healthy-minded after 
all she has gone through, and is certainly an admirable woman.” 
A short obituary notice was also published in Psyche, Febru¬ 
ary, 1894. 
After Hagen’s death, Mrs. Hagen returned to Konigsberg, in 
Prussia, her husband’s residence before his removal to the United 
States. 
XII AX ACCOUNT OF THE CIRCUMSTANCES ATTENDING THE 
TRANSFER OF THE COLLECTION OF NORTH AMERICAN 
DIPTERA ACCUMULATED IN THE HANDS OF LOEW 
FROM GUBEN, HIS RESIDENCE, TO THE MUSEUM IN 
CAMBRIDGE, MASS. 
In the “ Introduction ” (p. 8) I said that “ one of the first duties 
I had to fulfil, after my return to Europe (in 1877), was to go to 
Guben, the residence of Loew, and to secure the shipment to the 
United States of the large collection of North American Diptera 
which, for the last twenty years, had been accumulating in his 
hands,” and contained the types of his descriptions. I shall now 
